Spratt was informed by the formalist art of Josef Albers, minimalist painting by Ellsworth Kelly and Ad Reinhardt, and abstract expressionist painting by Barnett Newman; his work was also deeply influenced by his early days as a sign painter.
•
Another notable institutional show was Ten California Colorists, a group exhibition in 1985 that traveled to Redding Art Museum, San Jose Institute of Contemporary Art, Palm Springs Desert Museum, Montgomery Gallery at Pomona College and University Art Museum at the University of New Mexico.
Frederick the Great | Frederick | Frederick II | Frederick II, Holy Roman Emperor | Frederick Russell Burnham | Frederick Roberts, 1st Earl Roberts | Frederick Law Olmsted | Frederick I, Holy Roman Emperor | Frederick Forsyth | Frederick Douglass | Frederick, Maryland | Prince Frederick, Duke of York and Albany | Frederick III | Frederick I | Frederick Delius | Frederick William III of Prussia | John Frederick II, Duke of Saxony | Frederick III, German Emperor | Frederick William IV of Prussia | Frederick Schomberg, 1st Duke of Schomberg | Frederick I, Margrave of Brandenburg-Ansbach | Frederick III, Holy Roman Emperor | Frederick, Prince of Wales | Frederick Funston | Frederick Ashton | John Frederick II | Frederick Wiseman | Frederick Marryat | Lord Frederick Cavendish | Frederick Pollock |